#3F4499

#3F4499

Color Values

HEX

#3F4499

RGB

63, 68, 153

HSL

236.7, 41.7%, 42.4%

HSV

236.7, 58.8%, 60.0%

CMYK

58.8%, 55.6%, 0.0%, 40.0%

OKLCH

0.4311 0.1365 276.5

Properties

Cool Dark Nearest: slateblue 4

Color Harmonies

Complementary

#3F4499

#99943F

Analogous

#3F7199

#673F99

#3F4499

Triadic

#3F4499

#993F44

#44993F

Split Complementary

#3F4499

#99673F

#71993F

Tetradic

#3F4499

#993F71

#99943F

#3F9967

Color Blindness Simulation

Original

#3F4499

Protanopia

#414184

Deuteranopia

#414080

Tritanopia

#3F7471

Achromatopsia

#494949

CSS Usage

background-color: #3F4499;
color: #3F4499;
border-color: #3F4499;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F5F5FA
100
#E7E8F3
200
#CCCEEA
300
#A8ABDB
400
#797EC8
500
#4A50B5
600
#3B4091
700
#303374
800
#25285A
900
#1E2043
950
#13142A

Contrast Checker

Text on white

8.41:1

AA Pass AAA Pass

Text on black

2.5:1

AA Fail AAA Fail

Related Articles

Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026
Tutorials

How to Choose Brand Colors: A Step-by-Step Guide

Jan 18, 2026